This is already known issue and we have considered this “Need to display all columns in single page in Word Exporting” as feature and added to the feature request list. This feature will be available on any of upcoming release

We have added this “Need to display all columns in single page in Word Exporting” feature in feature request lists, but we will not have considered this implementation in our upcoming Volume 4, 2017 release roadmap. Based on your requirement this implementation will be available on any of upcoming Volume releases. We will let you know once its implemented.